EP0978974A3 - DAB receiver with detection of the transmission mode - Google Patents

DAB receiver with detection of the transmission mode Download PDF

Info

Publication number
EP0978974A3
EP0978974A3 EP99306171A EP99306171A EP0978974A3 EP 0978974 A3 EP0978974 A3 EP 0978974A3 EP 99306171 A EP99306171 A EP 99306171A EP 99306171 A EP99306171 A EP 99306171A EP 0978974 A3 EP0978974 A3 EP 0978974A3
Authority
EP
European Patent Office
Prior art keywords
transmission mode
circuit
moving average
output
delay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99306171A
Other languages
German (de)
French (fr)
Other versions
EP0978974A2 (en
Inventor
Kiyoshi Nomura
Shigeru Kaneko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of EP0978974A2 publication Critical patent/EP0978974A2/en
Publication of EP0978974A3 publication Critical patent/EP0978974A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

A delay circuit for delaying a received DAB signal is provided. A correlation circuit for correlating a delay output of the delay circuit with the received DAB signal is provided. A moving average circuit for calculating a moving average of a correlation output of the correlation circuit is provided. A transmission mode is assumed to be one of a plurality of transmission modes. The delay time of the delay circuit is set at a time corresponding to a symbol time length of the assumed transmission mode. The number of times that the output of the moving average circuit exceeds a prescribed value is counted. Based on counting results, a transmission mode that gives the maximum number of times that the output of the moving average circuit exceeds the prescribed value is judged to be the actual transmission mode.
EP99306171A 1998-08-04 1999-08-03 DAB receiver with detection of the transmission mode Withdrawn EP0978974A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10220621A JP2000059330A (en) 1998-08-04 1998-08-04 Receiver for digital broadcast
JP22062198 1998-08-04

Publications (2)

Publication Number Publication Date
EP0978974A2 EP0978974A2 (en) 2000-02-09
EP0978974A3 true EP0978974A3 (en) 2001-10-17

Family

ID=16753851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99306171A Withdrawn EP0978974A3 (en) 1998-08-04 1999-08-03 DAB receiver with detection of the transmission mode

Country Status (5)

Country Link
US (1) US6563896B1 (en)
EP (1) EP0978974A3 (en)
JP (1) JP2000059330A (en)
CN (1) CN1250991A (en)
CA (1) CA2278920A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1694445A (en) * 1999-08-27 2005-11-09 三菱电机株式会社 Synchronizing pulse generating method and method of receiving OFDM signal
EP1119122A3 (en) * 2000-01-20 2005-01-19 Matsushita Electric Industrial Co., Ltd. Digital broadcast transmission method, broadcast transmitter for transmitting digital broadcast signals and broadcast receiver for receiving said digital broadcast signals
EP1267536A1 (en) * 2001-06-13 2002-12-18 Conexant Systems, Inc. Multicarrier receiver with detection of the transmission mode and length of the guard interval
EP1296493A3 (en) * 2001-09-19 2006-08-16 Electronics and Telecommunications Research Institute Symbol synchronisation in a multicarrier receiver
JP3880358B2 (en) * 2001-10-04 2007-02-14 シャープ株式会社 OFDM demodulating circuit and OFDM receiving apparatus using the same
JP4291674B2 (en) 2003-11-11 2009-07-08 株式会社エヌ・ティ・ティ・ドコモ OFDM transmitter and OFDM receiver
KR100689038B1 (en) * 2005-03-29 2007-03-09 삼성전자주식회사 Apparatus for detecting transmission mode for digital broadcasting receiver and method thereof
KR100797470B1 (en) * 2005-08-26 2008-01-24 엘지전자 주식회사 Apparatus for detecting a guard interval in receiver of orthogonal frequency division multiplexed signals
CN100452862C (en) * 2006-04-24 2009-01-14 上海交通大学 Transmission mode judging method suitable to digital TV ground broadcasting transmission
JPWO2008026376A1 (en) * 2006-09-01 2010-01-14 シャープ株式会社 Demodulator, demodulator control method, demodulator control program, and recording medium recording demodulator control program
CA2671731A1 (en) * 2007-01-04 2008-07-17 Qualcomm Incorporated Method and apparatus for distributed spectrum sensing for wireless communication
US8902995B2 (en) * 2009-07-02 2014-12-02 Qualcomm Incorporated Transmitter quieting and reduced rate encoding
US8958475B2 (en) * 2009-07-02 2015-02-17 Qualcomm Incorporated Transmitter quieting and null data encoding
US8537772B2 (en) * 2009-07-02 2013-09-17 Qualcomm Incorporated Transmitter quieting during spectrum sensing
US9112618B2 (en) * 2009-07-02 2015-08-18 Qualcomm Incorporated Coding latency reductions during transmitter quieting
US8780982B2 (en) * 2009-07-02 2014-07-15 Qualcomm Incorporated Transmitter quieting and different encoding rates for portions of a set of frames
US9077298B2 (en) 2009-09-10 2015-07-07 Nec Corporation Sampling circuit, communication device, distortion correction circuit, signal sampling method, and program
US20110182257A1 (en) * 2010-01-26 2011-07-28 Qualcomm Incorporated White space spectrum commmunciation device with multiplexing capabilties
DE102013220927B3 (en) * 2013-10-16 2014-12-18 Technisat Digital Gmbh Identifying a radio signal
JP2015169949A (en) * 2014-03-04 2015-09-28 株式会社東芝 Radio communication apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653858A2 (en) * 1993-11-16 1995-05-17 Kabushiki Kaisha Toshiba OFDM Synchronization demodulation circuit
JPH09307599A (en) * 1996-05-17 1997-11-28 Pioneer Electron Corp Digital broadcast receiver with transmission mode identification function
EP0843431A2 (en) * 1996-11-13 1998-05-20 Sony Corporation Discriminating apparatus for digital audio broadcasting

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774450A (en) * 1995-01-10 1998-06-30 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
JP3130752B2 (en) * 1995-02-24 2001-01-31 株式会社東芝 OFDM transmission receiving method and transmitting / receiving apparatus
JP2802255B2 (en) * 1995-09-06 1998-09-24 株式会社次世代デジタルテレビジョン放送システム研究所 Orthogonal frequency division multiplexing transmission system and transmission device and reception device using the same
JPH09130362A (en) * 1995-10-30 1997-05-16 Sony Corp Receiver and reception method
DE69711957T2 (en) * 1996-02-02 2002-09-19 Deutsche Thomson-Brandt Gmbh Method and device for receiving multicarrier signals
JPH10209998A (en) * 1997-01-20 1998-08-07 Sony Corp Demodulation device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653858A2 (en) * 1993-11-16 1995-05-17 Kabushiki Kaisha Toshiba OFDM Synchronization demodulation circuit
JPH09307599A (en) * 1996-05-17 1997-11-28 Pioneer Electron Corp Digital broadcast receiver with transmission mode identification function
EP0843431A2 (en) * 1996-11-13 1998-05-20 Sony Corporation Discriminating apparatus for digital audio broadcasting

Also Published As

Publication number Publication date
JP2000059330A (en) 2000-02-25
US6563896B1 (en) 2003-05-13
CA2278920A1 (en) 2000-02-04
CN1250991A (en) 2000-04-19
EP0978974A2 (en) 2000-02-09

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